Product Summary

The STRF6524 is an off-line quasi-resonant flyback switching regulator. The STRF6524 is specifically designed to satisfy the requirements for increased integration and reliability in off-line quasi-resonant flyback converters. The STRF6524 incorporates a primary control and drive circuit with discrete avalanche-rated power MOSFETs.

Parametrics

STRF6524 absolute maximum ratings: (1)Control Supply Voltage, VIN: 35 V; (2)Drain-Source Voltage, VDS: 450 V; (3)OCP/FB Voltage Range, VOCP: -0.3 V to +6 V; (4)Package Power Dissipation, PD: 0.8 W; (5)FET Channel Temperature, TJ: +150℃; (6)Internal Frame Temperature, TF: +125℃; (7)Operating Temperature Range, TA: -20 to +125℃; (8)Storage Temperature Range, TS: -40℃ to +125℃.

Features

STRF6524 features: (1)Flyback Operation with Quasi-Resonant Soft Switching for Low Power Dissipation and EMI; (2)Rugged Avalanche-Rated MOSFET; (3)Choice of MOSFET Voltage and rDS(on); (4)Full Over-Current Protection (no blanking); (5)Under-Voltage Lockout with Hysteresis; (6)Over-Voltage Protection; (7)Direct Voltage Feedback; (8)Low Start-up Current (<400 μA); (9)Low-Frequency, Low-Power Standby Operation; (10)Overmolded 5-Pin Package.

Diagrams

STRF6524 block diagram